Real-time inversion of tsunamis generated by landslides

被引：16
作者：
Cecioni, C. [1 ]
Romano, A. [1 ]
Bellotti, G. [1 ]
Risio, M. [2 ]
de Girolamo, P. [2 ]
机构：
[1] Univ Rome Tre, DSIC, I-00161 Rome, Italy
[2] Univ Aquila, DISAT LIAM, I-67100 Laquila, Italy
来源：
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES | 2011年 / 11卷 / 09期
关键词：
DECEMBER; 2002; ALGORITHM; STROMBOLI;
D O I：
10.5194/nhess-11-2511-2011
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
In this paper, we test a method for forecasting in real-time the properties of offshore propagating tsunami waves generated by landslides, with the aim of supporting tsunami early warning systems. The method uses an inversion procedure, that takes input data measurements of water surface elevation at a point close to the tsunamigenic source. The measurements are used to correct the results of pre-computed numerical simulations, reproducing the wave field induced by different landslide scenarios. The accuracy of the method is evaluated using the results of laboratory experiments, aimed at studying tsunamis generated by landslides sliding along the flank of a circular shoreline island. The paper investigates what the optimal position is of where to measure the tsunamis, what the effects are, the accuracy of the results, and of uncertainties on the landslide scenarios. Finally, the method is successfully tested using partial input time series, simulating the behaviour of the system in real-time during the tsunami event when forecasts are updated, as the measurements become available.
引用
收藏
页码：2511 / 2520
页数：10
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